windows xp death

My sister tried to log on her dell computer today but all she got is as far as the windows xp loading page then it it just froze all she has is a blue bar top and bottom of the screen and a light blue background like the screen where the user accounts pop up. anyway a friend tried recovery discs for xp but it kept asking for an windows administrator pasword and even though we typed i  the password for the administrator account we set up it says not valid  password entered,apparently the hardware is fine just needs software repaired.  how can i fix the software without the password and keeping the data on the system as i cannot get in to back it up and she has emails with her visa applications for her honeymoon on it. please help if you can

Posted by msc 9 years ago


A rant about excessive use of acronyms

I am making a personal plea to contributors to Instructables to please, refrain from using acronyms! The same goes for submitted comments. I am not a total novice in computer hardware or programming, but I frequently get caught struggling to understand an instructable or comment because of a needless use of acronyms. Think how someone new to instructables , with little or no background, must feel. I understand that there are times acronyms are used for brevity, but surely a simple explanation of the acronym when first using it would be a help for all readers. In fact a list of acronyms to be used and the meaning of each wouldn't be a bad idea!  The purpose of an instructable (in my opinion) is to pass on a tip, a procedure or even to teach your reader how to do something that you think is worthwhile. An excessive use of acronyms with no explanation/definition strikes me as counterproductive. That makes me feel better, nothing like a good RANT!

Posted by cobourgdave 1 year ago


electric kontiki - electronic fail safe

Has any one come up with and electronic fail safe - return to beach/ gps type system for the electric fishing kontiki's that we have here in Newzealand - and i am sure every where else... currently i understand the only controls available are timed engine run to get it to the desired distance off the shore, and the latests ones have gps correction for tides and surf out to a way point, the trouble is when the long line anchored on the beach becomes separated from the unit ( and the commercial ones are freaking expensive) you have just lost it... surely with the wizardry of electronics and the people that hang out here some one can create a system even better if its gps waypoint based ( beach) that on separation of the long line will automatically turn that hardware around and send it back to the beach, to some where near where it set off from?

Posted by agatornz 6 years ago


weird question - online source for smallish mechanical parts

Hey, I'm new here. I'm an established musician (composing is my focus).  I've gradually decided I'd like to work on a new composition project which involves electro-mechanical instruments of my own design. I have a decent understanding of electronics, and I don't think the mechanical designs will cause me too many problems.  I've had plenty of experience in building hobby stuff - remote controlled planes, etc. What I don't know much about is where to source mechanical parts.  Electronics, no probs.  But things like wee little cranks and levers, hinges, etc, etc... stuff I'd rather not build from scratch but you can't exactly find in a hardware store. Any ideas?  (I know this is off the wall). Many thanks! - Tom

Posted by praxisaxis 5 years ago


HELP....Flysky with arduino

Hello, Basically i am making a robot for a competition called "robowars". I want to control the robot with the transmitter i.e. the flysky transmitter, like if i want a rotating disc to cut someone, or a hammer, etc i will have to control it with the transmitter right and i want to use the arduino for this, for example, to change the speed of the disc or change the speed of thee robot itself.I want to read the stick values and assign them for different tasks. My robot is about 15 kg, so i need a high power battery to run it, . I guess i can use a BEC for this....i just need help in reading the stick values from the transmitter.Please help in the hardware and software. I am using an ARDUINO MEGA 2560. I am totally new to robotics and have no experience so[b] please [/b]help. I need the code and the connections. Thanks in advance

Posted by vkarpuram 7 years ago


IP and licensing on Instructables

There have been some interesting discussions in the Forums about intellectual property, Creative Commons, open-source hardware, and patent law- hopefully you've noticed and chimed in already. I sent a synthesis of the discussion out to friends, bloggers, and journalists earlier this week, and have gotten some good responses. People are excited to see Instructables users actually testing out theories of open source design, and will be following our progress to see what solutions we find.What do you think? The main discussion is on the mirror post in the Forums.Instructables is a leader in user-driven innovation, as discussed last Sunday in the New York Times, and we'd like to share the ideas and trends we're seeing with you so we can get your feedback. Intellectual property (IP) rights are a hot-button issue among all creators, but few understand the legal details. Those who create music, text, and images can copyright their work under the Creative Commons and similar licenses, but no such equivalent exists for patentable ideas. Instructables users may choose to license the copyrightable portions of their Instructables under any of the available licenses, but the problem remains- what of potentially patentable IP? Current patent laws are geared toward large corporations- the law has been written to accommodate and reinforce the needs and goals of corporations and their lawyers. Individuals rarely have the time, money, and legal knowledge to file well-written patents, much less defend them- and a patent is only as good as the legal defense mounted in its support.Given these systemic problems, what should an inventor do with his or her idea? It turns out that one of the best things to do with a new, good idea is to share it. Instructables is a great forum to publicize your idea, whether you're interested in pursuing a patent or not. Under US patent law, one has a year after publication of an idea to file a provisional patent. Publishing an idea on Instructables provides exactly that stake in the sand, and can bring plenty of discussion about prior art and potential modifications to the original project.That year can be a valuable time to test the waters. The Instructables community can help identify potential collaborators or business partners, and investigate the appeal and potential commercial viability of an idea. At the end of that year, you're more likely to know whether it makes more sense to apply for a provisional patent, or to simply let your idea pass into the public domain. This idea is then unpatentable by others, so the idea will be available to other inventors to use, build upon, and remix without restriction.Instructables users are on the forefront of this discussion, testing the viability of these new models. For more information, check out Instructables founder and CEO Eric Wilhelm's Forum posts which cover these issues in more depth, and particularly the user discussions in the comments. Open Source Hardware and the Creative CommonsThe value of sharing patentable ideasThe cost of aggressive licensing of University patentsOpen-source design of a keyboard systemWhat do you think should be happening in these areas? How do you see these developments affecting the individual inventor? We'd love to hear your thoughts via either public or private channels. Feel free to contact me at canida (at) instructables.com for more information.Dan Goldwater wrote about some of these same issues a while back in the old Squid Labs blog: Advice for the budding inventor and Open Source Hardware and Industry.

Posted by canida 11 years ago


IP and licensing on Instructables

There have been some interesting discussions here in the Forums about intellectual property, Creative Commons, open-source hardware, and patent law- hopefully you've noticed and chimed in already. I sent a synthesis of the discussion out to friends, bloggers, and journalists earlier this week, and have gotten some good responses. People are excited to see Instructables users actually testing out theories of open source design, and will be following our progress to see what solutions we find.What do you think?Instructables is a leader in user-driven innovation, as discussed last Sunday in the New York Times, and we'd like to share the ideas and trends we're seeing with you so we can get your feedback. Intellectual property (IP) rights are a hot-button issue among all creators, but few understand the legal details. Those who create music, text, and images can copyright their work under the Creative Commons and similar licenses, but no such equivalent exists for patentable ideas. Instructables users may choose to license the copyrightable portions of their Instructables under any of the available licenses, but the problem remains- what of potentially patentable IP? Current patent laws are geared toward large corporations- the law has been written to accommodate and reinforce the needs and goals of corporations and their lawyers. Individuals rarely have the time, money, and legal knowledge to file well-written patents, much less defend them- and a patent is only as good as the legal defense mounted in its support.Given these systemic problems, what should an inventor do with his or her idea? It turns out that one of the best things to do with a new, good idea is to share it. Instructables is a great forum to publicize your idea, whether you're interested in pursuing a patent or not. Under US patent law, one has a year after publication of an idea to file a provisional patent. Publishing an idea on Instructables provides exactly that stake in the sand, and can bring plenty of discussion about prior art and potential modifications to the original project.That year can be a valuable time to test the waters. The Instructables community can help identify potential collaborators or business partners, and investigate the appeal and potential commercial viability of an idea. At the end of that year, you're more likely to know whether it makes more sense to apply for a provisional patent, or to simply let your idea pass into the public domain. This idea is then unpatentable by others, so the idea will be available to other inventors to use, build upon, and remix without restriction.Instructables users are on the forefront of this discussion, testing the viability of these new models. For more information, check out Instructables founder and CEO Eric Wilhelm's Forum posts which cover these issues in more depth, and particularly the user discussions in the comments. Open Source Hardware and the Creative CommonsThe value of sharing patentable ideasThe cost of aggressive licensing of University patentsOpen-source design of a keyboard systemWhat do you think should be happening in these areas? How do you see these developments affecting the individual inventor? We'd love to hear your thoughts via either public or private channels. Feel free to contact me at canida (at) instructables.com for more information.Dan Goldwater wrote about some of these same issues a while back in the old Squid Labs blog: Advice for the budding inventor and Open Source Hardware and Industry.

Posted by canida 11 years ago


Tennis Project Collaboration

I roughed out a design (reversed engineered from various pictures) a tennis ball rebounder for a co-worker but it doesn’t look like he has the interest to build it anymore.  It’s a nice piece of equipment for anyone that likes to play tennis since you can set it up in driveway or basement.  Here are a couple of examples: Video 1 Video 2 I would like to do an instructables collaboration on the project with someone that would find this useful.  I would tweak the design (overall size, hardware, etc.) with your inputs.  Your responsibilities: Buy the materials which I’m estimating at less than $100.  Note that purchased versions cost up to $500. Build it - requires only a saw and drill Take a few pictures of the build and final product. Help with the documentation if needed  In the end, it is your rebounder to enjoy.  See my past instrucables for examples of my work/documentation. 

Posted by mtairymd 2 years ago


Help me find a part!

Hello everyone. Looking for some help on this one. I can't find a clear defined picture of what is operating this sliding mirror. The dealers that carry it don't stock the mirror so can't tell me either unless I buy one, 3k isn't in my budget. I was thinking Linear Motion system but thats a high cost. From the picture I can see the stainless steel-track is L shaped. You can also see the mirror is set away some from the main cabinet, and also that the mirror is at the same height as the cabinet base. I've looked for casters, slides and other things I could hack but nothing seems to fit. You should not be able to see the hardware and thats a feature I would like to keep. I'd love your ideas or links to information. Thanks in advice. You can zoom well on this site. http://www.stylepark.com/en/agape/027

Posted by edwinston14 9 years ago


Electronics for power supplies

First, I apologize for being (almost) the hardware version of a "script-kiddie". I do want to learn the techniques involved but all of the electronics courses I've found work the wrong way around. They teach "this is what we have and this is what you can do with it" whereas my brain works in the "This is the problem, here is a solution and this is why it works." manner. This is how I learned software but when you get it wrong you can start again without losing the magic smoke! I have a 250ah, 12V battery bank, multiple DC devices requiring power and, eventually, several power sources for recharging. I also have several MC34063 chips and a few higher amp chips (somewhat optimistically as it turns out). Firstly, is there a practical course online that is built around this? Secondly (and probably extremely basic), if a device draws, for example, 3A is it self-limiting or do I need to put something between the source and the device too restrict the power?

Posted by ImmortalSoFar 8 years ago


80.000 nose dive autopiloted

Hi all, I'm planning to drop a glider from a weather balloon from about 80.000 feet. I want to let the airplane gain speed and then glide to the launching place or at least as close as possible to it. The idea is to do a nose dive (nose heavy) until enough speed is reached and slowly turn the airplane towards the launching site. Is this achievable with ardupilot software? I'm already sending a bunch of instruments like gyro, gps and magnetometer and I could use their readings on a Raspberry pi to run ardupilot , at least until video range is available to switch to manual. If possible I want to avoid buying the autopilot hardware 1. Any idea if this could be achievable the way I'm going about it? 2. Is this even legal? (I know it has been done already but I'm planning on doing this many times) Thank you in advance for any answer backed up by facts. 

Posted by Matienzo 3 years ago


Things I should have made an instructable out of : #1 "The Downhill Joystick"

It was my 4th semester electric engineering and my team and I got a little carried away with this (originally) simple projectYou see, we were supposed to design and build some sort of hardware peripheral that used the PC's parallel port for I/O...But as any decent "game programming" electric engineer we thought: "Now what's the fun in that"So we twisted the project's concept a bit and winded up with an Analog/Digital Joystick controller ISA card and a Downhill Racer Car Joystick ("force feedback" enabled)Project Results:+ We placed 4th best project that year in the department of electric engineering =]+ The whole thing got torn apart cause it was too big....+ The ISA card was mis-shipped to the wrong state and was never seen again...I`m still trying to find the schematics for the ISA board...

Posted by Proteus 11 years ago


Sorry for the shameless plug....

but I have so little time to work on my projects that it can take up to a year to get out something as simply constructed as the following.  It has to do with my main hobby being electronics, and the hardware end of things is a bit rusty, so it takes me longer, and I really have my life filled to the brim (for the moment anyways) so the darned need to stay alive gets in the way too. ANYWAYS, for those interested,  I have finalized my polarized light skin cancer "revealer":  take note, I warn this is not a medical grade device, and LOTS of training needs to be done before one can diagnose with such a thing, but it may help someone see an anomalous mole before it becomes cancer, and so if it does that for one person, I feel it was worthwhile spending 6 + months on it. The IBLE can be found here...for any that are interested.

Posted by Goodhart 7 years ago


test RJ45Cat5 to USB Female

I'm new to this forum. I need some instructions. I have an RJ45-cat5 male to USB female connector that I bought for 3 bucks. I've tried using it to connect my HP 1050 j410 USB printer to my Linksys WRT54GS (wireless) router so I can have a network printer. (The Desktop is directly wired to the cable modem and the to the router.) It doesn't work, but I don't know if it's the connector itself, or that the printer will not communicate with the router, directly. Is there a way to test the connector with another piece of hardware to determine whether the connector is actually any good? BTW.. I can't determine from HP, whether the 1050 j410 USB printer can become a network printer. Should I just go buy a USB print server for 20 bucks, or whatever? I'm using an Ubuntu 10.04 LTS Desktop with AMD-64 processor. Thanks to you for the best advice. Shobuz99

Posted by shobuz99 6 years ago


Grippy stuff for sports clothes

Hi hi, i have an old pair of cyclist's leg warmers. they have lost some of their elastic action, and they fall down almost straight away. I went and bought some new elastic to sew onto them, but also wanted to stick some gripper stuff on the inside. The gripper stuff is found on most knicks and cycle shorts now; it's some sort of silicone or rubber that grips to your leg. I don't know what exactly it is, so didn't want to go out to the hardware store and just buy some tube of silicone, only to find out it irritates the hell out of my skin or just doesn't do the job. I tried a (big) sewing supplies store, but they had no idea what it could be. Can anyone help? I'm in Australia. I saw that in the states you can buy elastic with the gripper already on it, which is a bit of a pain. The gripper stuff is used by skiers and canoeists too... Cheers, Ben

Posted by bluenevus 10 years ago


Finalizing my Desk

Hello Instructables members, I'm quite new to the wood crafting world and after many hours of research and opinions i have decided to make my own desk. I've got a 3D model of what i want and the hardware i use that justifies the need for the desk i built. I am at a stand still though has i have no idea of what type of wood to use or where to place supports. I've tried my best at figuring it out myself but i don't seem able to get it right. So if anyone could help me out please do! Also if anyone has any ideas to accessories to build into this desk please feel free to share! I've already got plans for grommets and an outlet for my laptops power brick. My model is open to anyone to modify and change, i also thank those that designed the monitors and laptop i used. Desk

Posted by okimdone 5 years ago


Mod a Magellan GPS

So I recently got my hands on a Magellan Roadmate 6000t car GPS unit. It's pretty nice, and has a touch screen as well as tactile buttons on the sides of the screen. I don't really have any use for it as a navigation unit, since I know my city VERY well, so I am looking into making it into some sort of pda/minicomputer type of thing. Maybe not even for the Internet, just music, photos, etc. However, there is a catch. Whenever I turn it on, it shows a blue screen. This may be because it is run on Windows Mobile, and it has been disrupted, or because of a hardware failure. But when I connect it to a computer, nothing shows up. So I'm looking for ideas on what to do and HOW. Also, I have a Creative Zen Vision W that I think I might want to put win mobile or something similar on, but the GPS is the first priority. So, any ideas?

Posted by peytonjr 10 years ago


Getting copper out of cables the low-cost low-tech way

Hi all, I'm working on a project aimed at helping e-waste workers in Ghana. They collect cables and burn them to get the copper (see video 6min). Burning them is toxic and they damage their health. I'm looking for alternatives to this burning process. - First idea would be stripping cables. I will need a very basic tool, man-powered, to strip them. - Second idea would be shredding and sorting out. Probably something like this bike (http://www.halwatts.co.uk/Esource). I would like to do it open source hardware to facilitate replication. I'm looking for people who can help by giving tips on how to build a prototype, and maybe get more involved.  Do you know about tools that can serve this purpose of getting copper out the cables, low-cost, low-tech? Thanks

Posted by rf.font 5 years ago


DIY Problem Solving Should Include Kith and Kin

Doing favors for,  and asking help from your local friends, neighbors, and merchants should always  be part of significant problem solving  . Not always the first step, not always the last step. But there is no intelligence like local intelligence.   The paint guy at Mutual Ace hardware and I know each other by name. The cashiers at Craftwood Lumber and the guys who work the lumber counter there know me as well. It's not that I do that much business. But, when they are not busy, I have run ideas past them.  Neighbors here discuss improvement  and fix up projects., I've helped people; they have helped me. I';ve helped teach this skill to my kids and they have profited by it   If you don't know someone local, the sites: meetup.com and rentafriend.com can help this.  The skill is being lost; otherwise I wouldf not mention what used to be obvious.

Posted by Wilmette 5 years ago


Touch screen Keyboard

Hey :) i have a sweet idea of building a touch screen keyboard that's separate from the monitor. i kno their are already some on the market but it be way cooler if i could build one myself. after doing some research i found the easiest way with the most versatility would be to have a touch screen ontop of a display and have the display then attached to a chip which would relay the image of the custom keyboard. the keyboard then would be hooked up to the computer and would function like a normal keyboard but soundless. :D the problem in all this planning is 1 i don't know how to put everything together, even though Ive been reading up , my knowledge of hardware design is minimal and 2 i don't know how to write programs, but if its any consolation im teaching my self simple programming like C++ but i doubt that will help. anyways , any suggestions Thanks a million Justin

Posted by Justin D 10 years ago


Automatic light switch with timer and Arduino

Greetings! I need to set up a test environment with End of Day lighting (EOD). I am a rose breeder and I read some interesting articles on the use of far-red light (740nm) followed by red light (660nm)  for a short while at EOD. The goal is to lengthen the stems of the roses by giving them EOD light in a sequence. What I need to achieve is that by dusk (EOD) the far-red goes on for 10 minutes and then off, followed by the red light for 10 minutes and then off as well utill the next evening.  I have the following hardware: Arduino's (Uno and Mega) LED's (red and far-red) Lightsensor two relays to power the LED's transformer(s) resistors etc. However: I am not a programmer. Can somebody help me with the code needed for this trial? As far as I can see it should be reasonably straightforward. Many thanks, Peter

Posted by PetervdPol 3 years ago


Hard drive MP3 boombox?

I was wondering if anyone has and Instructable or has done this. I've searched Instructables and can't find anything like this at all, which really surprised me as I thought this would have been an obvious one to do. What I'd like to do is build a bookcase / boombox stereo from scratch using: 1. an old hard drive 2. some speakers 3. a small lcd to display info 4. some basic controls 5. usb port to update files on HD -or- make the HD removable 6. whatever other electronics parts are necessary. It doesn't need to have radio, CD audio or anything else. All I want is a 200GB or larger hard drive full of MP3's and a way to play them with decent fidelity and loud without using the computer. I've built lots of PC's and know computer hardware and software fairly well but have never used a soldering iron... but can follow complex instructions very well. Also I'm not sure if it can use a prebuilt interface by scavinging the electronics from a basic el-chepo MP3 player or if it would be better to use something like a VIA Micro-ATX motherboard with built in CPU and have something like a USB drive booting to a simple version of Linux directly to a media player interface? That seems like it would cost more in parts but be simpler than creating custom circuitry. But that is the way I would go if attempting this on my own. An all hardware & firmware solution somehow seems more elegant but that's beyond my current ability's. If I go with the Micro-ATX motherboard and Linux it could be done in a modular format that would allow the addition of other components latter such as CD player (with auto MP3 ripping), input and output to other components etc. So has anyone done this? If you haven't but have the know how do you want to collaborate via e-mail and walk me through it. I'd create an Instructable if so and give you full credit. Any and all suggestions, comments, rants, put downs, cheers, roars, hollars and yells appreciated!!

Posted by skonofvulcan 10 years ago


Open Software for Fashion Prototyping

This has got to be the most exciting thing to come down wearable technology pike! It's a FREE downloadable book about Arduino boards (both "standard" and LilyPad), conductive fabric, resistive thread, soft buttons, LEDs and more!! The eBook is split into three parts covering the basics of hardware, software and the use of the Arduino IDE (Integrated Development Environment) in the first part. Part two give examples of using eTextile materials and the Arduino to make first cool projects involving LEDs, Piezo speaker and, the Digital and analog zipper.The third part is dedicated to show how to write programs for the Arduino platform. This all might sound very technical for fashion/clothing designer but dont be afraid, it's easily explained and covers just what's needed for wearable electronics (and not for building an new space station).I cannot wait to get started with this eBook! Finally, all the mysteries I had to ask others to program for me, unravelled! pun intendedDownload yours today. NOW! at Open Softwear

Posted by scoochmaroo 9 years ago


Mini Utility Boot CD or boot drive......

I often work with computers installing OS's...changing mobos, adding and removing hardware, some of you already know this ( your annoyed of all my computer questions lol :) )but lately I have started working in batch ( I MADE THE BEST APRIL FOOLS PRANK ( I will put the code on sometime)) So i know basic stuff @echo off,echo,cls,......(very basic) To the point now, I want to make a disc that I can boot form Bios that will allow me to run some basic utility's (eg:scan disk, format, check disk......maybe even a dos interface) It would be nice to have a screen that i could choose options from via keyboard. dose anybody got any ideas ? if anybody got ideas on possible utility's that would help too the image is what i woul like it to look like

Posted by littlechef37 10 years ago


insulating radiator cover

I'm looking for suggesting for upping the r-value on top of my radiator. Every window in my apartment has a radiator underneath it. I'd like to have some plants by those windows ('cause y'know, they need light and all) but I'm concerned about heat from below drying & killing the plants. A couple of the radiators have covers, but they're metal, so no insulation there. Ceramic pots may provide some insulation, but I'd really like to lay down a layer of some kind of building insulation proper just to be safe. The question is, what kind? Batting won't work, and the foam insulation panels I've seen at the hardware store I know are a fire hazard... plus not too fond of plastic-type materials. My dad suggested something he called "thermal block" which I believe is aerated concrete panels, but which I can't find a source to purchase. I'd like to spend less than $20, preferably less than $10 on this. Please help!

Posted by timeismine 9 years ago


programming help

First of all, I am new to this. But for my CEIS course project I decided to program an rc vehicle because I thought it would be COOL! Now I am knee deep into the project and I am needing guidance.  So I am going to attempt to stack raspberry pi hats. One adafruit pwm for servos and the other adafruit pwm for dc and stepper motors. The first thing I done wrong was solder the gpio headers on backwards. Since I'm not too professional with a soldering iron I ended up making the drives of no use and ordered more. Before I done that, I got my pi camera working! Still need to program the pan/tilt servos. I have battery power, wiring, almost everything as far as hardware. Just not sure if I am headed in the right direction. I tried different things with python and the i2c but now when I start up the Kernel Module fails.  Any help will be great!

Posted by SMILEY4242 1 year ago


connect chess board to pc?

Hi, i want to connect a normal - nicely looking wooden chess board - to my pc to play chess against the computer but instead of staring at the monitor, i rather want to look at my "analog" chess board, move on the board and let the computer "tell" me the next move (ie i don't have to sit next to the monitor when i play). i have been searching the web up and down and so far, havent found a single web page where somebody describes of how to do that; all i find is 500 dollar electronic chess boards .... since great chess programs exist for the pc, there is no need to write my own, i just want to read out the positions on the chess board - either through a web cam and some recognition software, or more hardware oriented with sensors on the board...... i really don't have a clue how to approach this problem in practice - any advice would be appreciated. regards, charline

Posted by charline 10 years ago


Can you convert the SD slot into a general purpose I/O port

SD slot general purpose I/O port Hi I posted this in "burning questions", but think this is a better place? Since user ports, inbuilt RS232 and Parallel ports have long gone from PC's, quick simple projects requiring a few lines of I/O are getting more difficult to implement requiring an extra layer of complexity of USB, BUT........ Could the SD card slot offer a solution? It would appear to have a 4 bit mode, 1bit mode and SPI bus as options. Could someone develop a driver and simple hardware to allow some I/O pins to become available again? This would be a fantastic solution to do Outp(100) and Inp(X) type commands again. I certainly do not have any experience of generating the drivers and linking them to VB, VC etc., but I'm sure someone out there could explore this?

Posted by Treth 6 years ago


want help with schaer programmer

Hi every one i just have proplem i want any body help me to solve it 1) i build a schaer programmer with 74ls07 hex buffer and i get the power from transformer power supply i integrated in same circuit i getted from it rigth voltage 13 for vpp and 5 for vdd and i found that ic prog only support schaer programer i make hardware check on programmer and get good rating at vpp and vdd and clock and data in schaer clock and data only avalible when vdd is available i tried to program 16f628a i failed may reason vpp get after vdd ? and i also tried to program 16f684a and faied also i dont realy reason when i try to read from pic i some times get garbage data is it noise on data and clock ? is so how to remove it ? can i use this programmer with winpic800 ? if so tell me how ?

Posted by m_fathy 11 years ago


Which arduino borad to buy?

Http://arduinoteacher.appspot.com/matrix_8.html Hello! And i am interested in starting arduino! But i am not familiar with the hardware spec of arduino boards. I have some electronics and programming bg as an physics student. I read the above tutorial, the led matrix looks like a easy/cool starter project. However, i have a question, For 4 by 4 matrix, it need 4 outputs and 4 grounds. With 14 i/o pins on an arduino uno (0to13), is 7 by 7 the maximum for upscaling this design without multiplexing? Or if i can get a "shield" that add more pins to the uno? Should i just get a arduino mega with 54 I/O pins? Since it is not that expensive, Is the tutorial compatible with a mega? Actually my target build is two 15 by 15 matrix displaying identical image. Can i rig up two identical led matrix, connect both in parallel to the same board? Thank you in advance! for your replies!!

Posted by mchau2 2 years ago


Possible Contest Topic

Is there a contest about the things that can be done with wood pallets? Ever since I saw an instructible showing how to take apart a pallet as well as the amount of wood used to make them, I have wondered if there has ever been a contest to show how useful they can be as potentially free lumber and hardware. After all the uses for pallets that i've looked up on the internet, there are about less than 50 uses for recyclable pallets, keeping these materials from ending up in a bonfire or a landfill. The link below can explain quite a bit about this subject. http://www.greenecoservices.com/31-ways-to-reuse-wood-pallets-make-money/ Maybe a way to lessen the number of pallets that end up being wasted in garbage can be achieved if there was a contest that encouraged the recycling of wood pallets. Anything that can be made from a pallet would be eligible to win whatever prize this contest would have. I personally think this would be a good idea to try. But do any of you think this would be a good contest idea?

Posted by EngineerJakit 7 years ago


Looking for an Electrical Engineer and an Angel Investor or a Business Specialist (in SF Bay Area preferably) to partner with on a high dollar ($500M) value project

I am Mechanical Engineer in SF Bay area an have a series of patent pending revolutionary industrial pumps. The project has gone through hydraulic and mechanical design iteration and looks very promising. These equipment require electric hardware and circuitry design as their driving mechanism which is technically a smart integrated motor. So if you have experience and/or willing to get deep in this area that would be very desired. I am looking for motivated and committed partners and will equally split the profit and share of the business. This patent pending project has a potential to grow up to 500 million to a billion dollar; these numbers are coming from the current competitors that have an inferior product!   I'll ask you to sign an NDA before we get going. Please contact me here or at bk.amir at gmail com. Regards, Amir 408 585 8115

Posted by AmirKalantari 2 years ago


Sound wave heart beat detection

I love to graph things. Everything from outside temperature to server room temperature to the number of users on the network to my weight.I just read an article in Make magazine about DIY ECGs, and it got me thinking.. i want to graph more things about my body :)Would a microphone embedded in the bed be able to pick up the heart beats and calculate the BPM? This way I could graph development in resting heart rate over time. The microphone would pick up lots of noise from the person moving around etc.. but that doesn't mather. It only needs to get a few clean heart beats in order to calculate the bpm, right?What hardware and software would be suitable to create something like this?Any ideas?Yeah, of course there are other more traditional ways of measuring heart beat.. but I'm to lazy to do that.. I'd rather spend some time making a fully automagickal system.

Posted by chr 11 years ago


Project for vector calculus

Hello there, So, for my project in Vector Calculus: The suggestion is that we pick a certain "curve" within a country road. We are to log longitude, latitude and altitude while we drive this "curve" for approximately 15-20 seconds. With the data from the latitude-longitude-altitude "logger", we are to perform the various vector calculus principles we have learned in class. Instead of driving the road, I would like to attach whatever latitude-longitude-altitude logger to a boomerang, and get my curve through flight. Does anyone know which sensor I should be looking for? A bit about me: I am currently an electrical engineering technician in product development for a motor-controls company. I mostly test hardware/software, which is designed by our in-house engineers. I am very comfortable with soldering, visual inspection of PCBs, schematics, and general electrical engineering knowledge. Does anyone have a feasible idea for getting a gps unit onto a boomerang, and be ale to transmit the data to me in real-time? Thanks in advance.

Posted by PaulP292 1 year ago


Idea - Conference Room Scheduling 2.0

I have an idea to make conference room scheduling easier. I know similar hardware based ideas exist (such as this), but I don't think anything quite like my idea available. It goes like this. The outside of each conference room would have a posted QR barcode. The QR code would contain static information about the room such as the room name/id, location, etc. Using a smartphone or tablet with QR barcode scanning capability (iPhone, iPad 2, Android, etc.), an individual could walk up to the room and scan the code. The code would prompt the device to forward the necessary room information to an internally hosted site. The site would be designed to accommodate mobile use and appear as a native application for the given device. It would be fully integrated with the back-end scheduling system (Google Calendar, Exchange, etc.). The user would be presented with the following options: - View topic of active meeting (if not marked as private) - View active meeting attendees (if not marked as private) - View room schedule for day, with open spots available with button to reserve. - Book a room on-the-spot simply by clicking a spot that is available - Invite others to join your meeting (using contacts on device or LDAP to look up in company directory) - Provide link to the closest room that is currently available and offer to reserve if acceptable. - Show floor map of meeting rooms with current location highlighted, and some indication of the rooms that are currently available (or available soon) within a 100ft radius. - If the person scanning the code is also the meeting organizer, they will be presented with options to update, cancel, or send out reminders to others attending. - etc...Features could go on and on Benefits of this idea: - Users don't need to go through the tedious process of pulling up a scheduling program, searching for a room, booking it, finding another room available, etc. - Users can still schedule rooms from their PCs as usual, but now have the added benefit of scheduling a near-by room on the fly - Nearly everyone in a technology workplace has a smartphone these days with QR code scanning capability - No hardware to hang outside meeting doors such as done with other similar systems - Most if not all functionality would be managed by the back-end system, allowing maximum flexibility in providing updates and maintenance of the system Thoughts? Worth developing? - John (http://manganlabs.com)

Posted by siliconghost 7 years ago


AC Wall Unit Timer/Thermostat

I have an older AC wall unit in my apartment. It has 3 dials – one for temperature (1-8 where 8 is coldest), one for fan speeds (low cold, high cold, low fan, high fan), and a manual lever that opens the vent in the back. I’m reciting this by memory as I haven’t actually looked at it closely, but it has one of the larger 3 pronged cables that plugs into a dedicated outlet in my wall (perhaps used for a higher voltage). In any case, my intentions are as follows:    • Have a timer for the AC unit to plug into to turn off on programmable intervals           o Monday – Friday it will be on after 6:00pm until 7:00am the following morning.    • One nice feature would be to give it a thermostat capability.           o If the temperature is below 70 degrees during these time intervals, for instance, then the AC unit will shut off, otherwise it will power back on.    • Another obscure (and I’m sure complex) feature would be to allow remote access to the timer. I know that this requires some unique hardware, but I’m familiar with programming and can visualize the methodology in telling the timer/thermostat unit a different set of commands (let’s say I know that I’m coming home early – I send information to the device via the internet to have it turn on a few minutes before I get home). I understand the last part is quite complex, but it’s not a priority at all, rather, a neat little feature that would make this all the more worthwhile (and in my eyes more interesting). I know that there is a similar device out there (can’t remember the brand name) that has a lot of these features, but I’m not willing to drop $300+ on something like that. For now, my priorities are listed in order per the bullets. First and foremost is being able to program a timer for a wall AC unit. Second is to have it detect the temperature of the room and set it accordingly. And third is the availability to ‘talk’ to the device remotely. My question for you is: how can I get through the logistics on this sort of project? What components (hardware) am I looking at (general price range), and what degree of difficulty will this entail? I have my computer practically right next to my AC unit, so communication with the device won’t be difficult in those regards. Otherwise, I’m just looking for tips and pointers. If someone happens to know of a (cheap) unit that does most everything that I’m looking for, then great. I’m all ears and really appreciate any feedback.

Posted by Phoenix5794 6 years ago


Nama: a project on design/art/technology.

Hello all! Some time ago I visited this forum and took lots of doubts regarding an ongoing experimental project. I would like to post the results of this work bellow: Nama, my graduation project on design/art/technology. A study about contemporary aspects of language and the sensitization of movement in search of a personal unique creative pulse. http://viraseres.com/nama/ Videos: Interactive Installation: http://vimeo.com/viraseres/nama Experimental interface for movement: http://vimeo.com/viraseres/nama-instrument There's also a recently Instructable of the interface that I made: https://www.instructables.com/id/Nama-Instrument-10/ The full concept and development documentation is available at the website, together with a DIY tutorial of the interface, and the open source files of the generative audiovisual installation. Feel free to send me feedback, critics and opinions. Thank you all for your help!

Posted by lgguts 5 years ago


USB Flash Drive Tester

I am looking for a tester to use to test USB Flash Drives.  I found a cool USB port tester on instructables, but I need something that would test the hardware functionality of a USB Flash Drive not the USB port.  I am not sure if I am saying this correctly, but reading about the functionality of USB Flash Drives, it appears to be a fuse on the circuit board.  I don't know if all drives have one.  Many of the videos I watched on YouTube require taking apart the drive and jumping the fuse to see if this is the problem.  I thought if there was a way to test to see if the circuit (I am not sure if I am describing this correctly.)  was completing then it would not initially require someone to take it apart.   Looking into this a little further, I see there are four leads on a USB.  It looks like from what I read that lead 1 [+5 VDC] and lead 4 [ground]. Are these the two leads which should show a completed circuit via a tester?  You probably have already figured out by now that I have no knowledge of electronics. Thanks for your help.

Posted by epodowski 5 years ago


permanently wire LED puck lights to 120 volts

I have been playing with some remote controlled puck lights in my garden (because "real;" outdoor lighting is very expensive), and was thinking that these puck lights go through batteries a bit too often for my taste.  I want to simply run some wires to each one, and then to some kind of converter that I could just plug into my outdoor-rated outlet.  These lights aren't rated for outdoor use ever, so I will have to silicone the seams on the plastic cases.  I can usually find that others have figured out how to do things before me and just copy them, but no one seems to have done this.  Is that because it is not possible/dangerous/expensive?  I'm more of a hammer and nail guy than a solder/wire guy, but I can follow instructions like the best of them.  Is there any reason not to do this, or can it be done?  I know that the hardware store outdoor lights are way too expensive, and this seems like a great option.

Posted by Purocuyu 5 years ago


I might be getting a new computer, recomendations?: UPDATE iMAC!!!!!!!

UPDATE!!!! WE GOT AN iMAC!!!!!Stats:Standard 20" 2.6 GHZ processor IT IS THE MOST AWESOME THING EVER!!! I JUST GOT IT TODAY!! (9/19)I got some dough from a job, and me mum said we can get a new computer (SWEET SPAGHETTI ABOUT FRIGGEN TIME!!).As I've been using a decade old machine for years (98SE AMD), I'm a weee behind. Got any recomendations on any of the following:OShardwareprograms etc...monitorsaccessoriesI'm in the market for a mid range, functional, student computer that I can soup up with memory and good graphics. I won't be doing very much gaming, but I'd like to know I at least have a machine capable of handling most stuff.Thanks!I've been a looking about, how good is an iMac? Turns out the software I need to run is Apple compatible, I'm really starting to like the look of the iMac... Until it comes to the price...

Posted by KentsOkay 10 years ago


RF Development Kit-Advanced, but could be a lot of fun

Micrel SemiconductorEbay{{{ I have noticed that some people are concerned that due to surface mount technology you can't make electronic stuff anymore. It is not true. A search will quickly find forums discussing how homebuilt electronics experimenters are getting around this. I have a nifty RF development kit for sale on ebay. See ebay link below. These development kits are used by new product developers to quickly get their RF prototypes up and running to develop software, hardware and firmware without the steep learning curve associated with starting development with discrete components. These boards allow you to build custom devices that can comunicate with each other up to a mile apart. Although this is not quite ham worthy distance someone might be able to have some fun with the kit. I have just one, but more (and the actual rf chip) could be acquired through Micrel Semiconductors. Anyway, I have this listed as an industrial item, so I am not sure the right people will see the ad. For those interested in playing with current technology RF.}}}

Posted by fordmodelb 12 years ago


a TRUE "handmade" rocket to reach the Earth orbit

.while I'm trying to start up a TRUE new.space company (as explained in this Instructables thread) to develop TRUE "space hardware", I ask to myself (and to you) if it's possible to build and launch an hobby/handmade rocket to Earth orbitfor what I know, this goal was NEVER reached, so far, and, only the (well funded) new.space company SpaceX has launched a privately-developed rocket to LEO (at its 4th attempt) last septemberwell, I've a suggestion to have more chances to succeed in this effort: just develop and build a (true working) SCALE-MODEL of an EXISTING rocket, insted of trying to develop a new rocket from zerothe "existing rocket" to scale-down could be (e.g.) the SpaceX Falcon-1 whose specs you can find here: http://www.spacex.com/falcon1.phpso, a resized "hobby rocket" (but able to reach the Earth orbit) could be 1/20th to 1/50th the full-sized Falcon-1 to send its second stage and a small (Sputnik-like) 20-50 kg. payload to LEO.

Posted by gaetanomarano 10 years ago


Fluorescent Lamp

Here is an art project from some designers that I came across and have been trying to reverse engineer. If anyone has any idea's on how to power and connect the fluorescent tube it would be greatly appreciated! Here is a description from the web:  Design duo Mischer’Traxler, Wien | Austria, started their project to focus on light sources and came up with the idea to combine two lamps into one. This way they created a new design that uses a energy-efficient fluorescent tube bulb and gives the lamps a whole new character. The name of this lamp is ‘Relumine‘ and plays on the fact that we all have to switch from old light bulbs to new energy saving light sources. The fun and challenge is to combine different type of lamps, like a hanging pendant with a floor lamp, a floor lamp with a desk lamp or different heights and hardware. Each Relumine uses two, discarded lamps, which are disassembled, sanded, newly lacquered and adapted with newer technology, before they are connected by a glass tube which holds the fluorescent tube. Together these two lamps need less energy than each one in its previous life.

Posted by dan.d 5 years ago


Ladyada wins EFF Pioneer Award!

The always-awesome Ladyada of Adafruit Industries is one three winners of the EFF's Pioneer Awards! It's doubly awesome to see more geek women on lists like these. Check out her recent projects here!From the official notice:A pioneer in the field of open-source hardware and software hacking, Ladyada helps the general public engineer and adapt consumer electronics to better suit their needs. Her do-it-yourself ethic is founded on the idea that consumer electronics are best modified for use by customers, not corporations. Fried runs her own company, Adafruit Industries, which sells unique and fun do-it-yourself kits to help consumers make gadgets such as backup iPod chargers, green power monitors and programmable displays for bicycle wheels. She also hosts an Internet video program called "Citizen Engineer" that provides step-by-step instructions to help consumers build and alter their own home devices. Awarded every year since 1992, the Poneer Awards recognize leaders who are extending freedom and innovation on the electronic frontier."

Posted by canida 9 years ago


bike booster kit

There is a project here on how to build a "BIKE BOOSTER KIT". The kit is made up of multiple 3d printed parts, including the battery pack, charger, test equipment, and a choice of small or large rc notor. The built kit is designed to mount above the front tire either bike or trike. Although I do not know what kind of bracket is included for mounting. It can be configured to fit in a bike frame in any number of positions as long as the roller can touch the front tire. I plan to mount this on a trike, There are only two possible locations, on the handlebar stem, or the fork center hole for the fender after fender has been removed. I need mounting instructions, user manual, premium hardware kit, any special mounting brackets, and sources as to where I can buy a fully assembled kit charged and ready for mounting. I am concerned that the unit is not long enough to reach the tire from the stem. I might need some sort of extender block to make it longer. Complete advice please. reeltoreelguy@gmail.com.  photo included.

Posted by rtrg 1 year ago


Nama: a project on design/art/technology.

Hello all! Some time ago I visited this forum and took lots of doubts regarding an ongoing experimental project. I would like to post the results of this work bellow: Nama, my graduation project on design/art/technology. A study about contemporary aspects of language and the sensitization of movement in search of a personal unique creative pulse. http://viraseres.com/nama/ Videos: Interactive Installation: http://vimeo.com/viraseres/nama Experimental interface for movement: http://vimeo.com/viraseres/nama-instrument There's also a recently Instructable of the interface that I made: https://www.instructables.com/id/Nama-Instrument-10/ The full concept and development documentation is available at the website, together with a DIY tutorial of the interface, and the open source files of the generative audiovisual installation. Feel free to send me feedback, critics and opinions. Thank you all for your help!

Posted by lgguts 5 years ago


Headphones Speakers hack

I've been thinking about this for quite a while now. Since I can remember, I always had problems when it comes to these, after a while, I always end up with the same problem, my speakers not working properly, its always the same, one speaker works fine, the other not so much, same happens with headphones, one side just stops working, and I have to jiggle with the jack to make it work. Of course after I end up buying a new set of speakers/headphones and that's it. I figured this happens because I plug in and out the heapdhones too many times, I use the speakers during the day, but at night I can't be loud so I swith to heapdhones, well, at least, this is my guess about the problem. This is what I was thinking about. I would need a way to have both heapdhones and speakers plugged in at the same time, and be able to switch between them at my please (by software or hardware). However I never even heard of an on off switch or anything like that. Does anyone have any kind of idea of how I could do this?

Posted by masok 9 years ago


Knick-Knacks For Setting up an Electronics Bench

I've decided to start doing some fiddling around with circuit board electronics such as arduino and LEDs. I've got the basic tools e.g. soldering iron, helping hands, solder, etc. I'm planning on getting a temp control.  However, I know from long experience in tech matters that there are always some little "knick-knacks" that you always end up needing. For example, in most basic machine repair, you always find you need an assortment of screws, bolts, nuts and washers around if you don't want to have to go to the hardware store twice a day.  So what kind of little fiddling things should I look at getting that the more experienced might have on hand without thinking about. Are there tapes, wires, odd little tools, collections of components etc that are useful but no obvious to novices? Is there something you'd wish you had when you first started?  Heh, I am afraid I don't know exactly what to ask for because I'm asking about things I don't know to ask for.  

Posted by shannonlove 7 years ago


Open-Source Laptop Control

Asus, a sponsor of Instructables, has put together WePC where they are asking for input on their next generation laptops. As part of their sponsorship, they've asked my opinion on various aspects of laptops. Most recently Open-source control of your laptop.The question this week is whether it is better to have simple control mode, advanced mode, or both options. This strikes me as one of those questions where the answer is so obvious that it's actually hard to answer because you're sure the question can't be that simple. Of course you want both! Default to simple, but allow one to switch to advanced to get under the hood to make changes.However, there is a deeper issue here, which is that laptop manufacturers should give greater control over their hardware to their users. They should open up their interfaces and let users write and install Firefox-plugin-like extensions to the laptop.My rant continues here.Finally, I'd like to know what you have thought about this Asus campaign. If you would be kind enough to take this survey, I would really appreciate it. Comments here are also good. Thanks!

Posted by ewilhelm 9 years ago


detergent feed for electric pressure washer

I know there are exspensive or maybe just newer PW's that you can add detergent to but not mine. It's just one of those hardware store 1300 PSI electric models. I'm just thinking that there has to be a way to provide some detergent to my spray. I think tapping into the feed hose with a siiphon rig would be a bad idea cuz then you'd be sending the soap through the pressure pump. It's have to be on the other end but there you have high pressure hose you might not want to cut. My thoughts flow along the lines of some sort of connector pipe comming off the output side that goes between the unit and the spray hose connector. You could make it a bit larger to hold like a dishwasher table or rig some sort of siphon hose (like a hose end sparyer) maybe. I'm not sure. My main thought isn't to use the soap for pressure CLEANING but to use the much greater reach of the pressure sprayer to spread the soap/cleaning solution farther - like up to second story siding. thanks

Posted by danneauxs 9 years ago